Hi...I'd like to follow up and put this question to the group. I did hear from DreamHost sales/support, and they do not support sender_bcc because the SMTP servers are different from the hosting servers that a client would SSH to.
Is there any other way to capture outgoing mail on the server side from a specific account in order to forward a copy to another account/e-mail for backup purposes? Perhaps through the web panel? I'd be using my domain/mail hosting only for me - this wouldn't be for monitoring anyone else's e-mail.
I use multiple mail clients, so client-side bcc'ing is not practical. Right now I have my own server, so I use the sender_bcc setup indicated above.
I did see posts from a couple years ago that indicated this wasn't possible back then. Perhaps it is now?